Clean solution for optional yet required variables

Is there some kind of design pattern for the following situation?

Requirements:

• lat and lon are always required.
• place and name are optional (can be null).
• When the optional variables are null, getPlace() and getName() should return the lat and lon as string.

The current situation seems kinda "dirty" to me, so i was wondering if there is "clean" solution. I could not find the answer myself.